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Waste Site Cleanup & Reuse in New England

Sutton Lane Plating 2008

Sutton Lane Plating

Data related to soil contamination was made available by a representative of the Massachusetts Department of Environmental Protection (Mass. DEP) at a meeting at the site on August 15, 2007. The meeting purpose was to provide a basis to initiate a removal program Preliminary Assessment/Site Investigation (PA/SI). Arsenic, cadmium, chromium and lead were the most commonly occurring contaminants. They were established as the contaminants of concern for the removal investigation.

Late in November 2007, the OSC and representatives from EPA’s New England Regional Laboratory (NERL) established and sampled a 97-point grid. Samples of surface soil from each point were analyzed at the lab. Results revealed that the standards established in the Massachusetts Contingency Plan (MCP) had been exceeded for at least one of the contaminants of concern at most grid locations. Working with EPA’s GIS personnel, sketches of each property were generated, and the applicable test results plotted on each. These sketches were provided to each property owner and the DEP.

Because several of the sample locations exceeding MCP standards were along property boundaries, a second round of sampling was performed. The sample grid was extended to include abutting properties owned by religious organizations, the only adjacent residential property.

As part of second round of sampling, lab personnel returned in May 2008 to resample 42 grid points established in the first round of sampling for the purpose of identifying how much of the total chromium identified in surface soil is trivalent chromium, and how much is the more toxic hexavalent chromium. Based on these results, hexavalent chromium is not a contaminant of concern. Revised sketches were developed reflecting all new results and provided to property owners and the DEP.

On May 6, 2008, the second round of sampling was completed when START personnel collected one composite sample from a roll-off dumpster on one of the abandoned commercial properties. The sample passed the Toxicity Characteristic Leachate Procedure (TCLP) test; however, it also identified that cadmium and chromium were present.

A Closure Memorandum dated July 9, 2008 formally documents the conclusion of the removal evaluation of this site and recommends that a removal action was appropriate because conditions there met the criteria in the National Contingency Plan (NCP) for initiating a removal action.

The site was mobilized on August 12, 2008 when the OSC and the cleanup contractor’s response manager and plant specialist performed a site walk to discuss the planned removal actions. To prepare for excavating contaminated soil, the plant specialist documented the vegetation at the one residential home included in this site. On July 17, 2009, all planned removal actions were completed and was demobilized.

Location: Worcester, MA
Start date: 08/12/2008
End date: 07/17/2009
Contact: Claudia Deane (deane.claudia@epa.gov)

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